Boldface words show the importance of something. It could also be a key word or term that you need to remember.
A peramble is a walk taken at a person's leisure, or in other words there is no rush to get to a particular destination.
the shape of the body from which the reference can be made. makes learning, teaching and describing parts of the body much easier
No purpose
the purpose of a subheading is to explain a little more about the heading
i think they purpose of mould is because without it we would have way more bacteria and in our ecosystems
When a word is boldfaced, it looks like this: bold.
Titles do not need to be boldfaced, but they can be. As for capitalization, no, not every word must be capitalized. You need a capital letter on the first and last words of the title, as well as important words in the middle, meaning that articles and prepositions do not need to be capitalized in the title.
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a typeface with thick heavy lines
106000
Chapter objectives
the purpose is normally vocabulary words
whats is the purpose of the guide words
boldfaced headings